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(No Model.) 4 sheets-'sheet 1.

A P.- KAMMBRER'. AUTOMATIC CALlPERING MACHINE. No. 471,557. PatentedMar. 29,1892..

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P. KMMBRER. AUTOMATIC GALIPERING MACHINE.

No.'4'7v1,557. Patented Mar.- 29, 1892.

(No Model.) l l v 4Sheets--Sheet 4.

P. KAMMERER. f

AUTOMATIC GALIPERING MACHINE.

No. 471.557. Patented Mar. 29, 1892.

- UNTTED STATES PATENT CFTICE.

PAUL KMMERER, 'OF TROISDORF, GERMANY.

AUTOMATIC CALlPERlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 471,557, dated March29, 1892.

Awlication filed February 4,1891. Serial No. 380,162. (No model.)Patented in France January 14, 1891, No. 210,780; in England January16,1891,No. 842; in Switzerland January 17,1891, No. 3,224; in BelgiumJanuary 21, 1891', No. 93,507;

in Spain JannarvZ, 1891, N0- 1l,718, and in Italy January 26, 1891, No.28,973.

- Letters Patent in Switzerland, No. 3,224, dated January 17, 1891;in'Great Britain, No. 842, dated January 16, 1891; in Belgium, No.

A93,507 dated January 21, 1891; in France, No.

210,780, dated January 14, 1891; in Spain, No. 11,718, dated January 26,1691, and 1n Italy, No. 28,973, dated January 26, 1891,) of whlch thefollowing is a full and exact specification.

This invention relates to a machine by means of which the dimensions ofbodies may be automatically measured.

It is especially the object of the machine to measure or to test thecorrectness of a dimension of bodies, parts, and pieces which aremanufactured in great quantities and the dimension of which must be ofgreatest accuracy, as necessary, for instance, with all those parts usedfor the manufacture of guns, rifles, revolvers, and other weapons.

The machine is characterized by its ability to not only separate partsof correct dimension from those of incorrect dimension, but also toseparate parts which are too long or too thick from those which are tooshort or too thin. Measurements of any imaginable kind may be executedperfectly, automati cally, and with an exactness and quickness nothaving been attained heretofore.

In order to make my invention more clear I refer to the accompanyingdrawings, in which similar letters denote similar parts throughout thedifferent views, and in which-'- Figure 1 is a side view of the machine,partly Vin section, taken on the line 9 10 of Fig. 2 and seen from leverf6 to lever d5. Fig. 2 is a back View. Fig. 3 is a modification ofl apart of Fig. 1. Fig. 4 is an end view of the standard e2 in themodification of Fig. 3. Figs. 5 to 8' illustrate several methods ofmeasurements. Fig. 9 shows the calipering-points of the bolts e5 and c6in Fig. 2. Figs. 10 and 11 show the arrangement of the chute b with itsadj uncts.

For the sake of distinctness I deem it ad visable to describe atfirstthe mechanical construction of the machine and afterward the effect andco-operation of the several parts, which consist in the whole of afeeding device for the pieces to be measured, of a measuring device, andof a delivery device for the pieces measured.

Two feet or supports, onlyone of which is to be seen in Figs. 1 and 2,carry a frame a4, to which is attached the table a. This latter bearsthreestandards b, e', and e2, b for holding the feeding device, and e e2for holding two bolts e5 and e6, between which the piece to be measuredis placed. Standard b, Fig. 1, has a slide c and two upwardly-extendingarms g g, which latter hold a tube or channel h, in which the -pieces Zto be measured are contained. Slide c is connected at its rear side withthe upper extremity of a double-armed lever n o by means of ashort armm, and has at its front side a bent fork e, which is influenced by aspring f and is secured to a longish projection d, firmly secured toslide c. Fork e holds always the undermost piece Z, which is carriedforward by the movement of slide c, whereat a iiap t', forming the underextremity of tube h, is swung outward. The flap is closed afterwardautomatically by a spring k. Lever n o has its fulcrum or bearing in astrong arm p, extending downwardly from table a. Said arm has also ailat spring r, influencing arm nof the lever, to the other .arm o ofwhich is attached a roll u, which at a side to a strong arm a', whichextends ,SVC

downwardly and is held by two other arms a2 d3, xed to frame d4. Theother side of lever 'y holds a vert-ical rod c2, provided at its topwith a wedge ,z and at its other end with a weight c3. Said rod isguided by guides c4 c5, which'are also fixed to the arms a2, a3, and d,respectively. Shaft tu has, moreover, a third disk g5, a side of whichi's provided with an oblique projection g, which may actonaroll g4,secured to the u nder extremity lof a doublearmed lever f6. Thelatterhas its fulcrum or bearing in an arm g3, extending downwardly from frame0,4, and is influenced by a springV g2, which tends to 4impart lavertical positionto lever f6 after the latter has been deviated by diskg5. The upper extremity of said -lever bears a hollow spindle fito theleft-handspindle f5 contains the thinner vpart of a bolt e, the thickerportion of which is inserted and guided in head e3 of standard e2, andwhich has at the other side two female screws g', resting-againstspindle f5- andvdrawfing the thick portion of bolt c6 against spring f4.will-thus be seen that the reciprocating mo,- tion of bolt e will alwaysbe of same extent, as it merely depends on the height or size ofprojection g6 of disk g5 on shaft w. Spring f4 issostrong that it is notbent'er influenced inthe least as long as regular work is'do-ne bythemachine. Said spring acts, so to say, as safety valve, as will beexplained more fully hereinafter. A similar bolt e5 is cou- -tained inhead e4 of standard e" and has at its lef t-hand sid-e?.e.,;theright-hand side in Fig. 2a projection. f2, against which presses aspring f. By this pressure bolt e5 is pressed against an adjustablesc-1ewf3,which is fixed to the upper extremity of a double-armed leverd5, having its fulcr-um in a bearing d6, secured to table a.. y Lever d5is at itsunder extremity connected with abent rod d4, the other end ofwhich is attached to a shortA arm d3, which is made in one piece withanother double-armed lever c6. The'latter has its f ulcrum in a bearingd', -xed to support t of the machine7 'and has its short armcounterbalanced byA a weight'. cl2.4 The other end of lever c in-Iiuencesa bent vertical rod h6, Fig. 1, which is in connection with ashort arm b5, secured to a swinging or oscillating chute b. Chut-e bswings between two points t 2, Fig. 2 provided i-n two arms a5 a5,extending downward-- ly from table ot. The upper opening of said chutemoves below a stationary chut-e a, arranged between standards e e2 andYbefore rstandard b, while the under opening of said chute moves abovethree delivery tubes or channels b2 h3 bf2-which are l firmly connectedat the upper extremities, but diverge thereafter to the respectivedelivery-boxes. (Not shown in the drawings.) To a side of chu-te bf issecured a double wedge c', which of cjeurse partakes of the oscillationsor movements of the chute and which may be influ- Itv enced or fixed byedge z of rod.c2 Shaft w has at one side a loose and a fast-pulley (notto be seen in Fig. 2) and at the other side a hand-wheel h', the purposeof which needs no further explanation.

Having thus described the mechanicallconstruction of the machine, I nowproceed to explain the effect and co-operation of the sevveral parts;After having filled tube h with a portion of those pieces the length ofwhich shall be tested or measured, and after having adjusted orregulated screw f3 of lever d5, according to the normal length therespective pieces ought to have, the belt is transferred from the loosepulley to the fast one by a beltshifter in known manner, and thus shaftw, with its three disks o x95, caused to rotate. The bolts e5 e6 in 4theheads e3 e4 of the standards e e2 have, when in normal position, asshownin Fig. 2,sueh a distance 4as to allow each of the pieces broughtforward by slide c to freely enter 4the space between them. Now as `soonas projection o of disk u pushes against roll u of lever 0 n, slide c,with its appurtenances d ef land with one ofthepieces Z, is movedforward by arm m as far las to bring that piece Z directly between thebolts e5 e6. Instantly thereafter projection g6 of disk g5 pushesagainst roll g4 of lever f6, thus deviating the-upper arm of it to theleft-hand side-i e., the right-hand side-in Fig. Z-and extending springg2. By thefmovement of lever f6 the bolt e6, and with it the piece to bemeasured, and bolt c5 are moved. The extent of the movement ordisplacement of bolt e( depends merely on the size and height ofprojection g6 on disk g5, as already explained. The extent of thedisplacement of bolt @5,however, diepen-ds en the length ofthat. piececontained between and held by said bolts. As

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bolt e5 is pressed now against screw f3 of lever d5, this latter isdeviated, and its deviation is conveyed by rod @Z4-and arm cl3 to leverc6, and the deviation of lever c6 is conveyed by rod b and arm b5 to theoscillating chute b': It is obvious that also the deviation of chute bdepends on the length of that piece between the bolts e5 e6, and inconsequence of this deviation theunder opening of chute b will be guidedor placed over `one of the tubes b2 b3 b4. In case the piece measured beof exactly correct length chute b will stand over tube 11B-ile., themiddle one. In caseV the piece be too long chute b wil-l be, placed overtube b4, and in case that piece be too short chute b will he deviated soas to get tube b2. New it may happen, however, that the piece measuredbe but very little too Along ortoo` short, and that the dimension bestill within the scope of allowancel In such a case chute b will not beplaced directly over one tube only,

but more or-less over two of them, according asthe length of therespective piece vwithin IIO screw, or the depth of a hole.

out being declared incorrect. As it is necessary, however, to directchute b always perfectly over one of said tubes, or, in other words, todirect it above tube b3 in case t-he deviation in length be within thescope of allowance, and to direct it above tube b2 or b4 in case thedeviation in length be without the scope of allowance, the device shownby 0c tr z y c2 .2' c has been provided. The parts indicated by theseletters have been formerly explained. Now as soon as chute b has reachedthe position impartedV to it by the lever arrangement before describedprojection o of disk o leaves roll u of lever o n, thus causing slide eto regain its original posi-tion by the effect of spring r. During thattime rod c2 is raised by the influence of projection m' of disk on rollz of lever y, and thus the respective position of chute b is regulated,finished, and fixed by the wedge-like effect of edge e' on the doubleedge c. The same effect may be had by furnishing rod c2 with a doubleedge and chute ZJ with a single one. Instantly after chute b is fixed incorrect position projection g6 of disk g5 leaves roll g4 of lever f6,and the latter regains its normal vertical position bythe influence ofspring g2.

Now as the pressure exerted by lever f6 on the bolts on the piecemeasured and on the other lever arrangement ceases the latter `partsregain also their normal position and the respective piece is carried bythe bolts over the stationary chute a6. When in normal position, thedistance between the bolts is somewhat greater thanv the parts or piecesto be measured, as already said. Thus the latter when arriving directlyover the chute 0.6

.will let loose by the bolts and will fall downthus to rotate shaft wwith but a half or a third of the velocity used with one projection. Ithas been shown in the foregoing in what manner testings of lengths couldbeeifected.

The machine is capable, however, of alsoV testing or measuring, forinstance, either the thickness of a piece or the correct shape of acone, or the correct length of the worm of a In short, every imaginabledimension or shape of any part, piece, or portion may be tested. Forexecuting measurements of such kind a modifica. tion of bolt e6 and ofthe mechanism for moving it is necessary, as bolt e6, before effectingthe displacement of bolt e5 and the deviation of the lever arrangement,must grip a certain extent over or into the respective piece. For thatpurpose the modification, Fig. 3, has been constructed, in which acombination of two slides @2 o2, with a bolt m3, is used in lieu of thesimplel bolt e, above described. In

this case is tested the conical part of a piece which is pressed againstthe bolt e5 and causes the regulation of the chute in exactly the samemanner as before described. This modified form is constructed asfollows: The head of standard e2 is enlarged so as to form two guides'e3e3, Fig. 4, in which two slides No2, connected by a hollow bolt m3, maybe moved to and fro. Said bolt m3 is moved by a rotating disk Z5, withwhich it is connected by means of a connecting-rod m, fastened at oneside to the upper part of bolt m3 by a pin m2 and at the other to diskZ5 by means of a crank-pin Z6. Disk Z5 rests on a bearingZ4 and issecured to the upper extremity of a shaft Z3, which is driven by shaft wby means of two conical wheels Z2 Z. Bolt m3 is at a side furnished witha chuck n,'which is fastened by means of a screw n2. The size, shape,bore, zc., of the chuck depend-on the kind of measurement to be made andmust of course correspond thereto. A third standard m5 is arrangedbetween standard e2 and bearing Z4 and holds a horizontal rod 'm4, whichis secured to the head of said standard andV may be adjusted by femalescrews m6. Rod m4 extends through bolt m3 and reaches into the chuck, soas to prevent the chuck from taking the piece measured with it when allthe parts regain their normal positions. The manner of working of thismodified form is clearly to be understood from the foregoing descriptionand from Fig. 3.

In Fig. 8 it is shown that the chuck may be attached not only tobolt more6, respectively, but also to standard e. In this figure?n is the chuck,which is securedl to head e4 of standard e by a ring r2 and screw r3.Bolt e5 has a plug or pin r4 reaching into the hole of piece r5, thedepth of which hole is to be'tested. A flat spring p', lixed to bolt e6and having a hook p2, serves for drawing the piece r off r4 after themeasurement is finished.

Figs. 5 to 7 illustrate several kinds of measurements which need nofurther explanation.

Having thus fully described the nature of this invention, what I desireto secure by Letters Patent of the United States is- 1. In an automaticmeasuretesting machine, the combination"l of a shaft w, having threedisks o g5, three rods or levers n o c2 f 6, with a feeding device, ameasuring device, and a delivery device, said rods or levers beinginfluenced by said disks and acting on said devices, substantially asand for the purpose described.

2. In an automatic measure -testing machine, the combination of a diskg5, having lone or more noses g, and a lever f6, actuated by said disk,with a displaceable bolt e, acting on the measuring device,substantially as and for the purpose described.

3. In an automatic measure testing machine, the combination of a diskhaving one or more noses fr', and a rod c2, actuated by said disk, witha single or other edge or IOO IIO

ISO

wedge o, acting on the delivery device, sub- I b', substantially as andfor the purpose de- 1o stantially as and for the purpose described.scribed.

4. In an automatic measure testing ma- In testimony whereof I havesigned this chine, the combination of a single or other specification inthe presence of two subscrib- 5 edge or Wedge z, fixed to rod 02, and anosciling Witnesses.

lating chute b', actuated by bolt e5, with a-n- PAUL KMMERER. othersingle or other edge or wedge c', fixed to lWitnesses: said chute, saidedge or Wedge e' adapted to GUSTAVE ELRICHS,

regulate, nish, and fix the position of chute OTTO DAHLMANN.

